The flower pot comprises a body including a bottom portion having a concave surface formed in it, a number of drain holes formed in the concave surface and a supporting assembly secured to the bottom portion of the body and arranged below the concave surface of said bottom portion. The supporting assembly includes a channel, means formed in it, a water-collection tray slidably engaged in the channel and arranged below the drain holes of the concave surface for collecting water flowing through the drain holes, and a support member for supporting the body and the supporting assembly. The supporting member includes at least three wheels secured to the bottom portion of the body.